An international Air France flight bound for the United States unexpectedly changed its destination after American authorities blocked its arrival over concerns about Ebola-related travel restrictions.

Flight AF378 had originally been scheduled to land at Detroit Metropolitan Wayne County Airport on Wednesday afternoon. However, during the journey, the aircraft was rerouted and ultimately landed at Montreal–Trudeau International Airport in Canada.

According to US officials, the change occurred after authorities discovered that a passenger from the Democratic Republic of Congo had boarded despite restrictions that should have prevented entry into the United States. Officials stated that the traveler was mistakenly allowed onto the flight.

US Customs and Border Protection explained that the measures currently in place are designed to limit potential risks posed by ongoing Ebola outbreaks in parts of Africa. Authorities said immediate action was taken once the situation was identified, resulting in the aircraft being denied permission to land in Detroit.

Importantly, officials emphasized that there was no onboard medical emergency and no indication of illness during the flight. Air France later confirmed that the diversion was carried out solely to comply with US entry requirements.

The airline, which was operating the route in cooperation with Delta Air Lines, noted that airlines are obligated to comply with the health and immigration rules of the countries they serve.

The incident comes as health agencies increase monitoring efforts related to Ebola activity in central and eastern Africa. Earlier this week, the Centers for Disease Control and Prevention and the Department of Homeland Security introduced strengthened procedures that include additional screening and tighter travel measures.

Reports also indicated that authorities planned to implement a system requiring flights carrying travelers from countries such as the Democratic Republic of Congo, Uganda, and South Sudan to arrive through designated US airports equipped for enhanced health protocols.

Health officials continue to monitor the outbreak situation in the Democratic Republic of Congo, where hundreds of suspected Ebola cases have been recorded. Neighboring Uganda has also reported confirmed infections.

Despite concerns, global health leaders have sought to reassure the public. Officials from the World Health Organization noted that while the outbreak remains serious in affected regions, the overall risk of international spread remains low. At the same time, they cautioned that case numbers could continue to rise as investigations and testing continue.

For travelers, the incident serves as another reminder of how quickly international health developments can influence aviation operations and border policies worldwide.